Vacuum-operated register



Jan. 10, 19280 I 1,656,134

/ L. BIRKETT VACUUM OPERATED REGI STER Filed March 10. 1926 2 Sheets-Sheet 1 ATTORNEY WITNESS:

Jan. 10, 1928.

L. BIRKETT VACUUM OPERATED REGISTER Filed March 10. 1926 2 Sheets-Sheet 2 n v I 1 I i u i I i Lyn nfl INVENTOR ATTORNEY WITNESS improvement in the .art. i

Patented Jan. 10, 1928.

RUM-TED smrg-s "fBiI K TiQ-Q I it lli Y wls ojifs'nil provision-'ofi a-noveI indicator orregister' de signed for connection with the I suction 'linc ofi a I milking; ama'ch-ine :and opera ble'=by-the pulsations therein for indicating a number .ot, pulsationsc-the; 'clevice 'constitutingzal guide as to thbrlength-pf: timegior 'numher o t .st'rokes ;requiredforl inilkinga-cow. .325

mAnimportant object is-the pro-vision iota dev-ice of this character which" will-be of distinct advantage" in'asniuoh ia's ':the operator willuheenabled to carry: on' the-milking operation for: the same length --.of time at 'each .1nilking,::therel y( making :the' treat'ment. of ieachfioww-uniformz and-avoiding: the disadvantages-Which result from overmilking -or 'undcr milking'a"- '1 i A more speoific; object is the provision of a device ,ofithis, cha-ractenwhich may be made as a eomplete and-separateentity capable of inteliposition iin: Ethe? suction; line-and without 1 necessitatin'gany changes; inilor additionsto the milking,. lhachine-;itself or: any :part of the system; the! device; being; suction operated and including a ratchet mechanism-for actuating the movable; elements thereof.

, An additional object is the,provis ion of a device of i this character which will be simple. and inexpensive .;to manufacture,easy;- to install and; adjust, .positive in action, eificient-and durable in service, and a general ;lVi t hv the above and other and advantages in view, the invention may,= consi;st

initherdetails of construction and arrangenlentof parts to behereinafter more fully described and claimed, and illustrated in the accompanying drawings inwhich:

Figurel is an elevation of the device, Figure 2 is a similar view. thereof with the cover plate removed, {1E

Figure 3 is across section taken on the line 33 of Figure 1,

Eigure ft is across section taken on substantially the line 44 of Figure 2, with the T for the suction line rotated 90 degrees from its position as shown in Figure 2,

Figure 5 is a detail perspective view of the movable arm,

Figure 6 is a detail perspective view of the piston,

Figure 7 is a fragmentary detail section through the piston.

asuitablecasing 10 0f any-'desiredsize, shape and detailed icoust ruct ion-" equipped: with a .1'eniovahle"cover'-'plate linormally heldin :placehy'screws or the like 12. 'f This co ve r is'i'ormed with or?carries a dial 13=graduated in: any-desired :mannerms 'fon instance to iiivd mate :the number-of strokesot :the; milking machine or the number of pulsations oc'cilrringdn' the suctiondine- Adeading to'or from the milkinglniaiclrine. i1? -z=, H v Journaled transversely of r the'ioasingis a shaft 14 carrying: a. pointer 15; movable over the dial-:13 andalso carrying-a thumb piece or. wthe like 16 -.-.wliereby l the; shaft mayi be turned manually for initially setting the: device Tor resetting it fromv time tOKtlIDGJ-T'TIIG shaft 14' carries awgear L7; meshin i'with'l-a ;p1nion-18-= .o'n a-zcount'ershaftl9 wbic is likewise vj ournaledztransversely? of: the casing and which is; iurthen-equi-ppedlwith aratchet 20-1 %)???Jain-i I i The perating imeans zincludes an- =arrnor lever :21 -,wh-icha;might,aof courseghe :ofiany desired specific menstruation-, but; which is here shown as having-on'e end bifurcated'at 22 toprOIvide arml'p0rtions23 straddlin gthe gear 17 and having=:thein.= end's coile :iOI otherwise formed to provide knuckles 24- pivotally engaged upon-"the shaft 141: Secured upon'the intermediate portion of the arm or lever 21 is azspring' fingeror pawl-25cmgaging thevratchet 20.--;-.-w 1 irxi f' I Suitably secured -:W-i:thinrthe1=casing' is-a guide -rod. 26- arrang edt in v a'xial '-'alinement with a :T- 27 i'whichzfis' securedf upon one side of the casing. :This T is intended to' be intel-posed inthesuctioniline Aya-very simple 1natter;-inas'rnuch as-the suction line consists of a rubber, tubewhioh maybe readily cut so" tliat theresultant:ends may' be engaged upon :opposite branches' of the y T; Slidably mounted within-the irem'ainingr branch iof the is: a-rpistor'r28 carried 'byapiston rod 29 of tubular'zor sockete-d formation so as to he slidably engaged upon the guide 26. Ohviously, any equivalent structure or mount ingmay be provided, the details disclosed being merely illustrative. At opposite sides the piston rod is shown as equipped with eyes 30 providing means for connection with the otherwise free end of the lever 21, this end thereof being cut away as at 31 to provide elongated tongues 32 which extend In order that the degree of movement, of thelever may be lifni'ted and properly adjusted use may be made of ,atbracket 34 slidably mounted within the casing and carrying opposed adjusting-screws: 35jxbe-j tween which is located a transverse strip or plate 36 secured across -the ends of the tonguess32. I;

. z'lil the-operationit will bel appa-rent' that :atieverypulsation in. the suction 'line the :piston' 28 will-move in'one direction and subsequently.- return -to its former position fuponthe-cessation of theimpulse. I At every back and forth movement of3the piston the leverkr2lawhich is pivoted-on thesha-ft 14, willnmove .=and-the pawl 25 carried thereby :will turn ther'atchet 'ZO-one step. The spring 33 of course acts to return the-lever and piston-to originalposition at'the end of each suction impulse. :TOflVOld retrograde movement-.foflthe ratchet it is preferable to provide asecond pawl 37 of 'ordinary construction. The movernent. of" the ratchet 20 is -of curse communicated to the gear 17 and shaft 14 so that the pointer will be moved over ;the' dial 13. Therat-io of the gear and pinion 17. and 18lrespectively may, of course, be'made anything desired thoughit is preferable that the reduction be considerablefto avoid toorapid-movement ofs'the pointer. ln actual practice the parts are so'calculated that tlie pointer-15 will make one complete revolution when there have' been snfiicient impu'ls'es' in the suction line to milk a cow requiring the mairimum time.

the actual use of the device itis apparent-that when a cow= is milked for-the first time a record may be made as to the number of pump strokes or suction impulses necessary, which record will serve as a guide for-subsequent milk'ingsfi -In "this way it is quite clear that overor under-milking. with its attendant disadvantages, will be avoided. The device 'will also 'be a'great time saver inasmuch as the inilking'operation may be discontinued just as soon as the required number of impulses have been given.

- -\Vhile I have shown and described the preferred embodiment of the invention. it should be understood that I reserve the right to makeall-such' changes in the details of construction and arrangement of parts as .ment in'both' directions. -2..- Inm'device ofthe=character described, fa-casing,-a rotatable element carried by the will not depart from the spirit of the invent ion-or th e scgpeiof the subjoined iclaims.

Having ':thus'l,describeii the invention, I claim:

1. In ,adevice oj the character described, a casing,a"r"ot amb1 element carried by the ;casing,;a s ha ft operatively connected with said element and carrying a ratchet, a pivoted -arm -;canny ing. a pawl cooperating with the ratchet, spring means urging said arm in ronendireetion, said arm being bifurcated, a 'i'eciproeatory elementextendmg through the -'bifurcation and c-ooperatingTwith the arm for, moving it against the resistance of said spring, -and-st0p ineans' =-coacting with the free-end 'oi'the arm for? limiting its movecasing, .a shaft loperatively connected with said element and cari'yin'ga ratchet; a second slfaft geared" toisaid "shaft, 'a'rnipivoted on said second naimed shaft sand carrying a p[awlzixioperatingI with the 'ratch'et, spring :ineansmrging'. saidj arrn in one direction, said arin being J bifurcateclgt' a reeiprdcatory ele- -r'nent*eatending throi1gh the bifurcation and cooperating withthe arm for {moving it against the resistance of said-'sp'ri'ng,"and

stop:-lnieans coabtingwith theff re e end of itl ie za rm for limiting' its movement 'in' both -'rlirections, 'saidf stopi meanscomprising a. U shaped bracket moufnted within the casing,

and-axiallyalinedscrews threaded tlllOllgl 'the 'armsjo't the bracket a-nd'disposed' at opposite sides ofzthe'arm' in: the path of movement-thereofzvz e's-11': 3.- In; a device of I the character described,

a casing; a rotatable element "cari-ied"by the casing, ai 'shaft operatively connected with said element and carrying a ratchet, a p'iv'o'te ed arm carryinga pawl cooperating with the ratchet, spring means urging -said"'arm in one direction, said airn being bifurcated; a reciprocatory' element extending through the bifurcation and cooperatingwith the arm for-moving it againstfthe resistancejof said spri'nggand stop means coacting;.with the free eiid of 'the arm for limiting its move mentin both; directions," said reciprocatory element-having diametrically opposite eyes thereon receiving-the"arni at opposite-sides of the bifurcation therein."

In testimony'whereof I aflix my signature.

LYNN BIRKETT. 

